Babbitting-jig for journal-boxes.



M. G. BIRD.

BABBITTING JIG FOR JOURNAL BOXES.

APPLICATION FILED JAN. 5. 1916.

1,207,128. Patented Dec. 5,1916.

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ATTORNEY I .MARK G. BIRD, OF REGINA, SASKATCHEWAN, CANADA.

BABBITTING-JIG FOR JOURNAL-BOXES.

Specification of Letters Patent.

Patented Dec. 5, 1916.

Application filed January 5, 1916. Serial No. 70,546.

To all whom it may concern:

Be it known that I, MARK G. BIRD, a citizen of the United States,'residi ng at Regina, in the Province of Saskatchewan and Dominion of Canada, have invented certain new and useful Im rovements in Babbitting- Jigs for Journaloxes, of which the following is av Specification.

My invention relates to a babbitting jig for journal boxes and the like, and one object thereof resides in providing an arbor which may be securely fastened in an adjusted position in the journal box and molten metalpoured between the box and bushing to form bearing bushings.

A further object resides in the manner of fastening the arbor in place during the babbitting operation.

Another object resides in the specific babhitting arbor.

And yet another object resides in the manner of dividing the space between the.

bearing and babbitting arbor into two parts so as to form upper and lower bearing bushings.

\Vith the above and other objects in view, I will now proceed to describe the specific form of the invention illustrated in the annexed drawing forming a part of the specification and in which:

Figure 1 is a side view of a connecting rod set-up ready for babbitting; Fig. 2 is a side elevation of the babbitting arbor; and Fig. 3 is a perspective view of the babbitting arbor; Fig. 4 is a fragmental sectional View taken through the lower portion of the connecting rod.

In detail the invention as illustrated is applied to a connecting rod A having a wrist pin bearing 1 at one end thereof and a crank pin bearing box at the other end. Said crank pin bearing box comprises two halves 2 and 3, the former of which is integral with the rod A and the latter of which is separate and may be attached to the former by bolts 4 extending through both and retained in place by nuts 5.

The babbitting arbor B consists of the body portion 6 of substantially the diameter of the shaft to be journaled in the box and provided with flanges 7 which are cut away at 8 to provide runners for molten metal. Also, at diametrically opposite points, each flange is cut away as shown at 9 for purposes to be hereinafter set forth.

In assembling the rod for babbitting as shown in Fig. 1, the bolts 4 are removed and the arbor B placed in the position shown in Fig. 1. and 3, respectively, of the box are then reassembled, a shim 10 being inserted on each side between the halves and rejecting into engagement with the arbor IE, by reason of the fact that said shims extend into thecut-outs 9. Thus, when the rod and arbor are clamped together, the arbor is firmly secured in an adjusted position and is prevented from longitudinal displacement by reason of the fact that the flanges 7 engage the cheeks of the connecting rod A and the shims 10 engage the cut-outs 9. When the rod has thus been assembled, the molten metal is poured into the space between the box and the bushing through runners 8 until the space between said bushing and box is entirely filled. The metal is then allowed to harden and the arbor is then removed and it will be found that a perfect bearing bushing has been formed by the coagulated metal.

It may be found desirable to form the bearing bushing in two separate halves similar to the upper and lower halves of the box. To do this, the shims 10 extend into engagement with the body portion of the arbor B throughout their length and divide the space between the arbor B and the box into two distinct casting chambers; thus, when the metal is run into each chamber through the runners 8, two separate castings will be formed which may be removed by removing the arbor B.

From the foregoing it will be apparent that I have devised a novel means of casting bearing bushings and babbitting bearing boxes. However, it is to be understood that, in practice, modification and variations in the arrangement and design of the parts may be resorted to without departing from the spirit of the invention as defined in the appended claims.

What-is claimed is:

1. A babbittin jig for bearing boxes including, in com ination with the journal box, an arbor provided with flanges arranged to engage and lie adjacent the checks of said box and connected by a body portion having an external diameter substantially equal to the size of the shaft to be journaled in the bearing, and means to flow molten metal between said box and body portion to form bearing bushings.

The upper and lower halves 2 2. A babbitting jig for journal boxes including, in combination with a journal box, an arbor provided with flanges arranged to engage and lie adjacent the checks of said 7 box and connected by a body portion subvstantially equal in external diameter to the size of the shaft to be journaled in said box, means for centering said arbor relative to said box, and means to flow molten metal between the box and body portion of said arbor to form bearing bushings.

3. A babbitting jig for journal boxes including, in combination with a journal box, an arbor provided with flanges arranged to engage and lie adjacent the cheeks of said box and connected by a body portion substantially equal in external diameter to the size of the shaft to be journaled in said box,

means for centering said arbor relative to said box, means for maintaining said bushing in an adjusted position, and means to flow molten metal between the box and body portion of said arbor to form bearing bushmouse molten metal into the upper and lower spaces between said box and body portion to form bearing bushings.

5. A babbitting jig for hearing boxes including, in combination with a journal box, an arbor provided with flanges arrangedto lie adjacent the checks of said box, and means for running molten metal between said box and arbor.

6. A-babbitting jig for hearing boxes including, in combination with a journal box, an arbor provided with flanges arranged to lie adjacent the checks or said box, means for running molten metal between said box and bushing, and means to prevent said arbor from turning while in use. 7

7 A babbitting jig for bearing boxes including, in combination with a journal box, a bushing provided with flanges arranged to lie adjacent the cheeks of said box, means for running molten metal between saidv box and arbor, means to prevent said arbor from turning,-and means to prevent displacement of said last named means.

8. A babbitting. jig for bearing boxes including, in combination with a journal box, a bushing disposed in said box, means for running molten metal between said box and arbor, and means to prevent said arbor from turning during use.

In testimony whereof I afiix my signature in presence of two witnesses.

MARK G. BIRD.

Witnesses:

Jno. GEO. WELEY, W. M. Hurron. 

